Effective 15 July 2011G - Suitable for all agesPG - Suitable for all ages, but parents should provide guidance to their youngPG13 - Suitable for persons aged 13 and above, but parental guidance is advised for children below 13NC16 - Suitable for persons aged 16 years and aboveM18 - Suitable for persons aged 18 years and aboveR21 - Restricted to persons aged 21 and above only